Collect a 24 hour urine sample.
Onsite [NJH]: Transport to lab within 1 hour.
Preferred volume: 1 mL aliquot of urine from a well mixed 24 hour collection in a labeled polypropylene or similar plastic tube.
Minimum volume: 300 mcL aliquot of urine from a well-mixed 24 hour collection.
Offsite: Frozen. Send urine aliquot Priority Overnight via FedEx and in a well insulated container and on dry ice.
8 hours at room temperature.
24 hours refrigerated at 2-8°C
>24 hours frozen at -20°C
24 hour urine sample is the only acceptable sample type.
Monday - Friday
Ion Selective Electrode
Female: 110-250 mmol/24 hours
Male: 110-250 mmol/24 hours